:root {
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #14233b;
  background: #eef6ff;
  font-synthesis: none;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 18% 8%, rgba(127, 179, 255, .42), transparent 32rem),
    radial-gradient(circle at 90% 88%, rgba(111, 220, 200, .26), transparent 30rem),
    linear-gradient(145deg, #f7fbff, #e9f4ff 58%, #f4fbff);
}

.shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 28px;
}

.card {
  width: min(100%, 560px);
  padding: 42px;
  border: 1px solid rgba(255,255,255,.9);
  border-radius: 34px;
  background: rgba(255,255,255,.82);
  box-shadow: 0 28px 80px rgba(50, 102, 160, .16);
  backdrop-filter: blur(20px);
  text-align: center;
}

.mark {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  display: grid;
  place-items: center;
  border-radius: 22px;
  color: #fff;
  font-size: 34px;
  font-weight: 800;
  background: linear-gradient(145deg, #7fb3ff, #4f8ef7 52%, #2f6fd6);
  box-shadow: 0 15px 35px rgba(79, 142, 247, .34);
}

.eyebrow {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: .15em;
  font-weight: 800;
  color: #4f8ef7;
}

h1 {
  margin: 0;
  font-size: clamp(34px, 8vw, 50px);
  letter-spacing: -.04em;
  line-height: 1;
}

.intro {
  margin: 18px auto 28px;
  max-width: 410px;
  color: #63738a;
  font-size: 17px;
  line-height: 1.55;
}

.release {
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 15px 17px;
  margin: 0 0 18px;
  border-radius: 18px;
  background: #f4f8fe;
  text-align: left;
}

.release .dot {
  width: 11px;
  height: 11px;
  flex: 0 0 11px;
  border-radius: 50%;
  background: #9aabc0;
  box-shadow: 0 0 0 5px rgba(154,171,192,.13);
}

.release.ready .dot {
  background: #34c759;
  box-shadow: 0 0 0 5px rgba(52,199,89,.13);
}

.release.error .dot {
  background: #ff3b30;
  box-shadow: 0 0 0 5px rgba(255,59,48,.12);
}

.release strong, .release span { display: block; }
.release strong { font-size: 15px; }
.release span { margin-top: 3px; font-size: 13px; color: #78879a; }

.primary {
  width: 100%;
  min-height: 58px;
  border: 0;
  border-radius: 18px;
  background: linear-gradient(145deg, #5b98f9, #3f7fe9);
  box-shadow: 0 12px 28px rgba(63,127,233,.3);
  color: #fff;
  font: inherit;
  font-size: 16px;
  font-weight: 750;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, opacity .15s ease;
}

.primary:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 15px 34px rgba(63,127,233,.35); }
.primary:active:not(:disabled) { transform: translateY(0); }
.primary:disabled { opacity: .48; cursor: default; box-shadow: none; }

.hint {
  margin: 14px 8px 0;
  color: #8794a6;
  font-size: 12px;
  line-height: 1.45;
}

details {
  margin-top: 25px;
  padding-top: 20px;
  border-top: 1px solid #e6edf6;
  text-align: left;
  color: #607087;
  font-size: 14px;
}

summary { cursor: pointer; color: #41536d; font-weight: 650; }
ol { padding-left: 22px; margin-bottom: 0; line-height: 1.6; }

@media (max-width: 560px) {
  .shell { padding: 16px; }
  .card { padding: 30px 22px; border-radius: 26px; }
}